package com.seek.util;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
  
public class Base64Util {  
    // 加密  
    public static String getBase64(String str) {  
        byte[] b = null;  
        String s = null;  
        try {  
            b = str.getBytes();  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
        if (b != null) {  
            s = new BASE64Encoder().encode(b);  
        }  
        return s;  
    }  
  
    // 解密  
    public static String getFromBase64(String s) {  
        byte[] b = null;  
        String result = null;  
        if (s != null) {  
            BASE64Decoder decoder = new BASE64Decoder();  
            try {  
                b = decoder.decodeBuffer(s);  
                result = new String(b);  
            } catch (Exception e) {  
                e.printStackTrace();  
            }  
        }  
        return result;  
    }  
    
    public static byte[] getFromBase64New(String s) {  
        byte[] b = null;  
        if (s != null) {  
            BASE64Decoder decoder = new BASE64Decoder();  
            try {  
                b = decoder.decodeBuffer(s);  
                return b;
            } catch (Exception e) {  
                e.printStackTrace();  
            }  
        }  
        return b;  
    }  
}  